Rust Stains with the tie wire or rebar during the pool shell will only get bigger after a while. Resurfacing the complete pool is the only method of getting a dependable, stain-no cost try to look for the pool area. No matter if your present tile & coping is slipping https://www.google.com/maps/place/Griffin+Dynasty+Pools+%26+Pavers/@27.260973,-80.4533593,10z/data=!4m6!3m5!1s0x8eadd681600ed435:0xc2531cf82534e327!8m2!3d27.260973!4d-80.2885644!16s%2Fg%2F11v_4jn4x8?hl=en&entry=ttu